ABSTRACT
Resumen Uno de los grandes genios de la biología fue el médico sueco Carlos Linneo (1707-1778). Se lo denominó princeps botanicorum por su gran aporte a la clasificación de las plantas. Sin embargo, su fama imperecedera se debe a su obra Systema Naturae en que crea un sistema taxonómico binomial para clasificar a todos los seres vivos y no vivos en tres reinos: el reino mineral, el reino vegetal y el reino animal. En su esquema taxonómico, los animalículos o microorganismos descubiertos por el sabio neerlandés Antoine van Leeuwenhoek en 1676, fueron clasificados tentativamente en el reino animal, dentro de la clase Vermes o Gusanos. La idea de que estos animalitos fueran la causa de las enfermedades infecciosas fue planteada por Linneo y desarrollada en profundidad por Johannes C. Nyander y Johannes Carolus Roos, dos de sus discípulos, quienes publicaron esta idea en sus tesis Exanthemata viva en 1757 y Mundus invisibilis en 1767, respectivamente.
Abstract One of the great geniuses of biology was the Swedish physician Carlos Linnaeus (1707-1778). He was called princeps botanicorum for his great contribution to the classification of plants. However, his undying fame is due to his work Systema Naturae in which he creates a binomial taxonomic system to classify all living and non-living beings into three kingdoms: the mineral kingdom, the plant kingdom and the animal kingdom. In his taxonomic scheme, the animalicles or microorganisms discovered by the Dutch scholar Antoine van Leeuwenhoek in 1676, were tentatively classified in the animal kingdom, within the class Vermes or Worms. The idea that these little animals were the cause of infectious diseases was imagined by Linnaeus and developed in depth by Johannes C. Nyander and Johannes Carolus Roos, two of his disciples, who published this idea in their theses Exanthemata viva in 1757 and Mundus invisibilis in 1767, respectively.
Subject(s)
Humans , Animals , Physicians/history , Communicable Diseases/historyABSTRACT
O objetivo do presente trabalho foi avaliar in vitro a relação auxina:citocinina a fim de obter propágulos nos segmentos distintos do epicótilo e hipocótilo de sementes germinadas in vitro de Sacha inchi (Plukenetia volubilis Linneo). Os segmentos apical (A), mediano (B) e o basal (C) foram introduzidos em meio de cultivo MS, semi sólido (2,0g L-1 Phytagel), suplementado com vitaminas de MS, sacarose (30,0g L-1) e submetidos a três doses da auxina ácido indolbutírico - IBA (0; 0,1; 0,5mg L-1), associadas a quatro doses da citocinina benzilaminopurina - BAP (0; 0,1; 0,5; 1,0mg L-1), totalizando 36 tratamentos. Após nove semanas de cultivo in vitro, o segmento apical (A) apresentou formação de brotações por organogênese direta nas concentrações de 0,5 e 1,0 de BAP, associado a 0,0 e 0,1 de IBA. O emprego do cultivo in vitro é viável na produção de mudas, utilizando como explante a região apical de sementes germinadas in vitro.
The aim of this study was to perform an in vitro evaluation of the auxin:cytokinine ratio in different segments of the epicotyl and hypocotyl of Sacha inchi (Plukenetia volubilis Linneo) seeds germinated in vitro. The segments apical (A), median (B) and basal (C) were introduced into semi-solid MS culture medium (2.0g L-1 Phytagel), supplemented with MS vitamins, sucrose (30.0g L-1) and submitted to three doses of auxin indolebutyric acid - IBA (0; 0.1; 0.5mg L-1), associated with four doses of the cytokinine benzylaminopurine - BAP (0; 0.1; 0.5; 1.0mg L-1), totaling 36 treatments. After nine weeks of in vitro cultivation, the apical segment (A) presented shoot formation by direct organogenesis at the concentrations of 0.5 and 1.0 of BAP associated with 0.0 and 0.1 of IBA. It is feasible to use in vitro cultivation with the apical region of seeds germinated in vitro used as explants.